Research Article
Effect of Ap-Index of Geomagnetic Activity on S&P 500 Stock Market Return
Table 6
Regression Results for Equ. (
3) and (
4).
| | | SMI | | (3) | (4) | | Coefficient | p-value | Coefficient | p-value |
| | Intercept | 0.0000 | 1.000 | -0.6509 | 0.5026 | | DGD | -0.0012 | 0.0480 | -0.0012 | 0.0489 | | YEAR | No | Yes |
| | Adj. R-squared | 0.0122 | 0.0099 | | Obs. | 240 | 240 |
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